core: Panasonic Viera integration error on start up

The problem

Running beta 0.117.0b1 on restarting home assistant I receive this error:

Logger: homeassistant.components.panasonic_viera
Source: components/panasonic_viera/__init__.py:96
Integration: Panasonic Viera (documentation, issues)
First occurred: 16:15:06 (1 occurrences)
Last logged: 16:15:06
Couldn't gather device info. Please restart Home Assistant with your TV turned on and connected to your network. 

This did not occur with 0.116.4

Environment

• Home Assistant Core release with the issue: 0.117.0b1
• Last working Home Assistant Core release (if known): 0.116.4
• Operating environment (OS/Container/Supervised/Core): HassOS 4.14
• Integration causing this issue: Panasonic Viera
• Link to integration documentation on our website: https://www.home-assistant.io/integrations/panasonic_viera/

Problem-relevant configuration.yaml

Nil, set up in the UI.

Traceback/Error logs

Additional information

When this television is off there is no network interface. So no wonder it has a problem, however in 0.116.4 this merely resulted in the state of the device being ‘Unknown’.